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I had a few questions about grounding and bonding related to a single EG4 3000 inverter mostly stationary system. For context, I have a grid-connected cabin, and I am using one inverter and battery mounted on a cart powering a few things inside the cabin. Occasionally I'll want to move it...

Ah, thank you for the clarification, that makes sense. On a related note, is there an equivalent requirement for a GFD on the battery side? It seems to me that there isn't, but that seems strange to me.

Is ground fault protection required on the battery mounts (like it is for many systems on the PV side)? If not, why not? Thanks!

NEC 2023, 690.41 (B) states: I'm curious from a safety point of view why the NEC says it's fine to not have ground fault protection for ground-mounted string array. Why would adding an earth ground to single string PV system somehow make the system safe from ground faults? Is there something...

My understanding was that "solidly grounded" meant having a connection directly to earth ground, which from what I have seen and read online seems to be standard for ground-mounted solar arrays (I see folks run an GEC from their arrays and mounting equipment to earth ground). Am I...